page {
    height: 100%;
 
  }

  .con {
    height: 100%;
    display: flex;
    flex-direction: column;
  }
  
  .top {
    height: 200rpx;
    line-height: 200rpx;
    text-align: center;
    font-size: 32rpx;
    color: white;
    background-color: lightgreen;
  }
  
  .scroll {
    flex: 1;
    overflow: scroll;
  }
  
  .center {
    text-align: center;
    height: 100%;
  }
  
  .bottom {
    height: 200rpx;
    line-height: 200rpx;
    text-align: center;
    font-size: 32rpx;
    color: white;
    background-color: lightsalmon;
  }